Improvement in revolving cultivators



G. sTEvEN'soN'.

Y REVOLVING CULTIVA'TORS. No, 185,634. Patented Jan.za,1s'17. l

ngz.

NFETERS, PHOTDMTHDGRAPHER, WASHINGTON, C.

UNITED STATES PATENT 1.13%'

IMPROVEMENT IN` REVOLVING CULTIVATORS.

Specification forming part of Letters Patent No. 186,634, dated January23, 1877; application filed December 11, 1876.

To all whom it may concern: Y

Be it known that I, GEORGE STEvENsoN, of Zionsville, in the county ofBoone and State of Indiana, have invented certain new and usefulImprovements in Revolving Cultivators 5 and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawing, and to theletters of reference marked thereon, which form a part ot' thisspecitication.

My invention relates to that class ot' earthpulverizers in which one ormore series ot' revolvingstar wheels are placed and rotate upon one ormore shafts or axles when the machine moves forward; and the nature ofmy invention consists in the construction and arrangement of suchstar-wheels, having side cutters placed at an angle ot' about forty-fivedegrees to the arms upon which they are formed, as will be hereinaftermore fully set forth.

In the annexed drawing, Figure 1 is a verti cal section of anearth-pulverizer embodying my invention, and Fig. 2 is a section of oneof the star-wheels.

A represents a suitable frame-work in which are mounted two parallelshafts or axles, B B, upon each of which is mounted a series of wheels,C. rEhese wheels are madein star form, and the front of each blade isformed with a straight sharp cutting-edge, c, so as to cut anyobstruction that it may come in contact with, such as corn-stalks,weeds, grass, Ste.,

- while it is made to revolve by the forward movement of the cultivatoror pulverizer. On the sides of the blades of each wheel G are formedside cutters D D, which are set at a certain angle of 'about forty-vedegrees to the blade, so that their cutting-edges b willv strike theearth or other substance in a cutting position and cut any substancethat it may come in contact with. These side cutters being set at ananglev and in circular form will assist in drawing1 the cultivatordeeper into the soil by its rotating motion than it otherwise would; andno obstructions will hang or clog to said side cutter, as they cut theirway into the soil and out again. One or more series of these wheels areused, and when two or more shafts with wheels are in one machine, thewheels should be set so that those on one shaft will work between thoseon the other shaft, and thus one set of wheels cleans the other of allobstructions. On one side of the wheel the inclined side cutters D areat the same distance from the ends of the arms, while 011 the other sidethe cutters are at varying distances from the ends of the arms, as shownin the drawing.

I make no claim to any invention shown in patents to Lefebcr 8v Shults,October 31, 1871, and W. J. Atchison, December 5, 1876; but

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

In a revolving cultivator or earth-pulverizer the star-wheel C, havingeach ot' its arms provided with straight cutting-edge a, and inclinedside cutters D D, set at an angle of about forty-ive degrees, and incircular form, substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing as my own I affix 'my signaturein presence of two witnesses.

GEORGE STEVENSON. Witnesses: JAMES M. SHULTZ, JNO. A. PERRILL.

